Availability Check According to ATP Logic

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Availability Check According to ATP Logic

In the check according to ATP logic, the system checks whether the dependent requirements of each component are covered by specific receipt and issue elements or by stock.

This check is carried out dynamically, that is, each time you carry out the check, the system recalculates the current situation.

If a quantity can be committed for the requirement date, the system enters precisely this quantity as the committed quantity in the dependent requirements and the ATP quantity for the components is reduced by the committed quantity.


Therefore, in the next availability check, dependent requirements can only be committed for the amount of the remaining ATP quantity.
The results of the check are displayed as follows:

• as a missing parts list for the planned order (Availability check: Overview)

• as either a missing parts list or a missing parts overview for the production order

For more information, please refer to the following sections:
Missing Parts List (Availability Check: Overview)
Missing Parts Overview


Settings for the Availability Check According to ATP Logic

The following settings must be maintained for this type of check:

• checking group

In the material master, you must assign a checking group to the materials which are to be checked (MRP screen / sales data screen, field, Availability check).

• checking rule

Checking rules are saved in Customizing for MRP or Production Control.
The system determines the scope of the availability check (that is, the receipts, issues and stocks that are to be included in the availability check) depending on the combination of the checking group and the checking rule.

The checking rule and group also define further criteria for controlling the check according to ATP logic.

For the component check in assembly processing, the system determines the scope of the availability check using:

• the checking group defined in the material master record of the component and

• the checking rule defined in Customizing for MRP for the plant or the checking rule defined in Customizing for Production Orders per order type/status.

You can exclude certain components that you know are always available (such as screws) from the availability check according to ATP logic.


To avoid these components from being included in the availability check, enter the indicator, no check in the field entitled Availability check in the material master record, in the MRP 2 screen or in the Sales screen.

Similar Threads:

• Availability Check in Assembly Processing
• Configuring Availability Check Through Checking Groups
• SD material Determination based on availability check
• Availability Check on Quotation